Home / 90,767.20-136,175.10-80,974.30

Finding the Fourth Proportional to 90,767.20, 136,175.10 and 80,974.30

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Solution

The fourth proportional to 90,767.20, 136,175.10 and 80,974.30 is: 121,483.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,767.20 : 136,175.10 = 80,974.30 : x
  2. Step 2: Convert to fraction form
    90,767.20/136,175.10 = 80,974.30/x
  3. Step 3: Cross multiply
    90,767.20x = 136,175.10 × 80,974.30
  4. Step 4: Simplify right side
    90,767.20x = 11,026,683,399.93
  5. Step 5: Solve for x
    x = 11,026,683,399.93/90,767.20
  6. Step 6: Final answer
    x = 121,483.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.